[
https://issues.apache.org/jira/browse/YARN-9830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16928305#comment-16928305
]
Bibin A Chundatt edited comment on YARN-9830 at 9/12/19 7:22 AM:
-----------------------------------------------------------------
AbstractLivelinessMonitor methods are synchronized which blocks concurrent
access based on multiple containerIds
PingThread actually monitors the *running* containers items .
In AbstractLivelinessMonitor#running could be changed to concurrentHashMap and
remove the synchronization at the class level.??
[~rohithsharma]/[~sunil.gov...@gmail.com]
was (Author: bibinchundatt):
AbstractLivelinessMonitor and methods are synchronized which block concurrent
access based on multiple containerIds
PingThread actually monitors the *running* containers items .
In AbstractLivelinessMonitor#running could be changed to concurrentHashMap and
remove the synchronization at the class level.??
> Improve ContainerAllocationExpirer it blocks scheduling
> -------------------------------------------------------
>
> Key: YARN-9830
> URL: https://issues.apache.org/jira/browse/YARN-9830
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Bibin A Chundatt
> Priority: Critical
> Labels: perfomance
>
> {quote}
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> org.apache.hadoop.yarn.util.AbstractLivelinessMonitor.register(AbstractLivelinessMonitor.java:106)
> - waiting to lock <0x00007fa348749550> (a
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.ContainerAllocationExpirer)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl$AcquiredTransition.transition(RMContainerImpl.java:601)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl$AcquiredTransition.transition(RMContainerImpl.java:592)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$SingleInternalArc.doTransition(StateMachineFactory.java:362)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory.access$500(StateMachineFactory.java:46)
> at
> org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:487)
> - locked <0x00007fc8852f8200> (a
> org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl.handle(RMContainerImpl.java:474)
> at
> org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl.handle(RMContainerImpl.java:65)
> {quote}
--
This message was sent by Atlassian Jira
(v8.3.2#803003)
---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
